Bonnard, by Timothy Hyman (Thames & Hudson, £7.95 in UK)

This biography-cum-study is well timed, and more to the point it is well written and researched, diving deep into Bonnard's bitter sweet relationship with Marthe Boursin, but without any hint of window peeping. (Incidentally, judging from the photographs, how ugly were most women's clothes of the period just before the first World War!) Inevitably, the colour reproductions suffer from the small format, but there are some excellent, unfamiliar photographs, one of them showing Bonnard bent over the engine of his (apparently un-cooperative) Ford car in 1923.